Multifunctional wheelchair

Abstract

The invention discloses a multifunctional wheelchair which comprises a chair seat, a chair seat suspension frame, wheels and wheel suspension beams. The chair seat is fixedly connected with the chairseat suspension frame through an L-shaped supporting beam, the chair seat suspension frame enables the two wheel suspension beams to be connected through a suspension beam shaft, and the wheel suspension beams are connected with the wheels through a wheel axle. The upper surface of the chair seat suspension frame is provided with a swing rod, a steering pulley set, a motor and a rotary base, a screw of the motor is connected in a sliding sleeve of the swing rod in a sleeved way, and one end of the swing rod is connected with a movable pulley through a zigzag support. The chair seat is providedwith fixed pulleys, the wheel suspension beams are provided with steel rope fixing points, and the steel rope fixing points, the fixed pulleys, the steering pulley set and movable pulleys are serially connected through steel ropes. A suspension system of the wheels and a suspension system of the chair seat are mutually independent mutually, the two suspension systems independently operate in an inclination mode, the chair seat is basically kept in the horizontal direction during jolting of the wheels, the wheels can touch the ground and are also balanced in stress, and wheel suspension and caused turning risk do not occur.

Description

technical field [0001] The invention relates to the technical field of wheelchairs, in particular to a multifunctional wheelchair. Background technique [0002] Wheelchairs are an indispensable means of transportation for the elderly, the weak and those with lower limb disabilities. Wheelchairs are generally divided into ordinary wheelchairs and special wheelchairs. Ordinary wheelchairs are generally composed of four parts: wheelchair frame, wheels, brake device and seat. Ordinary wheelchairs do not have the functions of climbing stairs and cross-country obstacles, which greatly limits their scope of use. [0003] Therefore, technicians at home and abroad have proposed many special wheelchairs for climbing stairs and obstacles. There are many types of related devices and patents, mainly including crawler type, wheel group type and multi-legged type. Their functions and application characteristics are also different. There are pros and cons. For example, when a crawler whee...

AI Technical Summary

Problems solved by technology

For example, "a multifunctional wheelchair" proposed in patent CN106943248 A uses a gyroscope to measure the inclination of the seat seat, and makes the seat seat rise or fall on the suspension through the transmission structure of chains, gears, turbines, and worms, thereby ensuring the seat seat to a certain extent. However, since the wheels and the seat are on the same suspension structure, only two front or rear wheels can overcome obstacles at the same time. When a single front or rear wheel overcomes obstacles, the operation mode of the gyroscope will be confused. , causing the other front wheel to hang in the air, causing the risk of overturning. At the same time, its structure is complex, there are many spare parts, it is not easy to operate, and it is easy to damage

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